Analysis of interatomic Contacts of Structural Units in PDB entry:
4EXT


Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
For CSU analysis of other PDB entry

This page provides analyses of contacts formed by:
For analysis of ligand-protein contacts, use: 3D structure can be seen in additional window with STING software for 4EXT entry

There are 3 chains in PDB entry 4EXT (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 156THR 251
B
 ARG 873LEU 895
C
 THR 6LYS 209
Residue contacts

1. List of contacts for up to 10 consecutive residues:
Chain ID from residue number to residue number


2. Detailed analyses of contacts for any single residue:
Residue number chain ID
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There are 11 helices in PDB entry 4EXT. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
164 179Right-handed alpha
Helix 2
2
A
183 200Right-handed alpha
Helix 3
3
A
202 219Right-handed alpha
Helix 4
4
A
222 244Right-handed alpha
Helix 5
5
B
886 891Right-handed alpha
Helix 6
6
C
13 34Right-handed alpha
Helix 7
7
C
38 40Right-handed 310
Helix 8
8
C
57 77Right-handed alpha
Helix 9
9
C
113 133Right-handed alpha
Helix 10
10
C
156 164Right-handed alpha
Helix 11
11
C
175 180Right-handed alpha
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There are 2 sheets in PDB entry 4EXT. Click on sheet of interest to get list of strands forming it: A, B,

There are 8 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
247 248first strand
Strand 2
C
184 192parallel
Strand 3
C
198 206anti-parallel
Strand 4
C
94 103anti-parallel
Strand 5
C
80 88anti-parallel
Strand 6
C
145 152anti-parallel
Strand 7
B
877 880anti-parallel
Strand 8
C
171 173anti-parallel
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There are 2 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
42 47first strand
Strand 2
C
50 55anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il